(USA) -- Twitter sent out e-mails to some of its users earlier today prompting them to reset their passwords because of possible security issues with third-party applications.
"Twitter believes that your account may have been compromised by a website or service not associated with Twitter," the e-mail says. "We've reset your password to prevent others from accessing your account."
The e-mail includes a link that brings users to a password reset page, then prompts users to review their Applications and revoke access to any application that they don't recognize.
TechCrunch reports that Twitter usually sends out these types of emails when a significant number of accounts are hacked. Many users have Tweeted about receiving the email or about having issues logging in to their accounts.
Twitter has not confirmed the size of the hack, but it told TechCrunch that users who have received the emails should reset their passwords from the link provided in the email or directly on Twitter.com.